Audio Science Review of Expert 200.

[Confused]

Wasn't the original test (FFT) done using the analog input?  That would probably explain the slightly higher noise floor.

No, but that might be confusion caused by myself in earlier posts.  The very first dashboard / FFT is via USB, then there are S/N ratio measurements via analogue.

I picked up earlier that the per Paul Miller's measurements via S/PDIF indicated much lower noise in comparison the analogue input, but missed the point that Amir's very first test was via USB.

Interestingly, Paul Miller's measurements also show lower noise via S/PDIF in comparison to USB, which perhaps lead to my own confusion.

With the input optical basically being S/PDIF from a protocol perspective, this could very well explain the higher noise floor.

Hi Confused,
Expert can only produce 20W at 20Khz, is that means anything to real listening experience?

I think this point was answered by others earlier in this thread.  In particular see the post from @David A on page 13, who offered a far more eloquent explanation around this topic than I could.

What we do know is that Devialet Experts have protection systems that cause them to shut down during certain types of high frequency bench tests.  We also know that our own amps do not shut down during normal use.  So as long as your own amp has not shut down recently, the answer has to be a simple no.